AVERAGE SPEED...

AVERAGE SPEED

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A cyclist covers his first 20 km at an average speed of 40 kmph, another 10 km at an average speed of 10 kmph and the last 30 km at an average speed of 40 kmph. Then the average speed of the entire journey is

Explain with example the distinction between the magnitude of average velocity and average speed over the same period. Show that and the average speed is either greater than or equal to the average velocity. When is the equality sign true?

Usually average speed means the rationof total distace travelled to the total time elapsed. However, sometimes thephrase average speed can vean the magnitude of the average velocity. Are the two same ? Discuss.

Abdul while driving to school, computes the average speed for his trip to be 20 kmh^(-1) . On his return trip along the same route, there is less traffic and the average speed is 40 kmh^(-1) . What is the average speed for Abdul's trip ?

A cyclist moves non-stop from A to B, a distance of 14 km, at a certain average speed. If his average speed reduces by 1 km per hour, he takes 20 minutes more to cover the same distance. The original average speed of the cyclist is

Abdul, while driving to school, computes the average speed for his trip to be 20 km h^(-1) . On his return trip along the same route, there is less traffic and the average speed is 30 km h^(-1) . What is the average speed for Abduls trip ?

During the first 18 min of a 60 min trip, a car has an average speed of 11 ms^-1. What should be the average speed for remaining 42 min so that car is having an average speed of 21 ms^-1 for the entire trip?

SL ARORA-Kinetic Theory of gases-Example

AVERAGE SPEED
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A narrow uniform glass tube 80 cm long and open at both ends is half i...
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A gas at 27^@ C in a cylinder has a volume of 4 litre and pressure 100...
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A gas at 27^@ C in a cylinder has a volume of 4 litre and pressure 100...
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As an air bubble rises from the bottom of a lake to the surface, its v...
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Using the ideal gas equation, determine the value of gas constant R. G...
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A balloon partially filled with helium has a volume of 30 m^3, at the ...
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A vessel contains two non-reactive gases neon (monoatomic) and oxygen ...
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A vessel contains two non-reactive gases neon (monoatomic) and oxygen ...
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A closed container of volume 0.02m^(3) contains a mixture of neon and ...
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Calculate the r.m.s. velocity of air molecules at S.T.P. Given density...
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A vessel is filled with a gas at a pressure of 76 cm of mercury at a c...
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Calculate the kinetic energy of one mole of argon at 127^(@)C. Given,B...
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Calculate the KE per molecule and also rms velocity of a gas at 127^(@...
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Calculate the number of molecule in 2 xx 10^(-6)m^(3) of a perfect gas...
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Calculate the root mean square speed of one gram molecule of hydrogen ...
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(a) Calculate (i) root-mean-square speed and (ii) the mean energy of 1...
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Calculate Boltzmann's constent.
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At what temperature will the average velocity of oxygen molecules be s...
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A vessel A contains hydrogen and another vessel B whose volume is twic...
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A vessel A contains hydrogen and another vessel B whose volume is twic...
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